Message:

<p>[QUOTE=&quot;SuperDave, post: 2443644, member: 1892&quot;]Not to mention &quot;effective&quot; aperture changes with increased magnification as well, pushing you closer to DLA. Effective Aperture is Aperture * (1 + Magnification) so that if you&#039;re using 0.5x magnification and set aperture at f/8 on the lens, you&#039;re actually getting 8(1+.5)=f/12. And you&#039;re into diffraction. At 1x mag, like you&#039;d use for a Dime or Cent, you&#039;d be at f/16.</p><p><br /></p><p>And it&#039;s unlikely you can get the whole face of a coin into sharp depth-of-field with apertures wider than f/5.6....[/QUOTE]</p><p><br /></p>

Your name or email address:

Do you already have an account?

• No, create an account now.
• Yes, my password is:
• Forgot your password?

Stay logged in